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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
26f54e9a | 33 | #include "sysemu/block-backend.h" |
9c17d615 | 34 | #include "sysemu/blockdev.h" |
0d09e41a | 35 | #include "hw/block/block.h" |
737e150e | 36 | #include "block/blockjob.h" |
83c9089e | 37 | #include "monitor/monitor.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
d26c9a15 KW |
41 | #include "qapi-visit.h" |
42 | #include "qapi/qmp-output-visitor.h" | |
9e7dac7c | 43 | #include "qapi/util.h" |
9c17d615 | 44 | #include "sysemu/sysemu.h" |
737e150e | 45 | #include "block/block_int.h" |
a4dea8a9 | 46 | #include "qmp-commands.h" |
12bd451f | 47 | #include "trace.h" |
9c17d615 | 48 | #include "sysemu/arch_init.h" |
666daa68 | 49 | |
c9b62a7e | 50 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
666daa68 | 51 | |
1960966d MA |
52 | static const char *const if_name[IF_COUNT] = { |
53 | [IF_NONE] = "none", | |
54 | [IF_IDE] = "ide", | |
55 | [IF_SCSI] = "scsi", | |
56 | [IF_FLOPPY] = "floppy", | |
57 | [IF_PFLASH] = "pflash", | |
58 | [IF_MTD] = "mtd", | |
59 | [IF_SD] = "sd", | |
60 | [IF_VIRTIO] = "virtio", | |
61 | [IF_XEN] = "xen", | |
62 | }; | |
63 | ||
21dff8cf | 64 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
65 | /* |
66 | * Do not change these numbers! They govern how drive option | |
67 | * index maps to unit and bus. That mapping is ABI. | |
68 | * | |
69 | * All controllers used to imlement if=T drives need to support | |
70 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
71 | * Otherwise, some index values map to "impossible" bus, unit | |
72 | * values. | |
73 | * | |
74 | * For instance, if you change [IF_SCSI] to 255, -drive | |
75 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
76 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
77 | * the drive can't be set up. Regression. | |
78 | */ | |
79 | [IF_IDE] = 2, | |
80 | [IF_SCSI] = 7, | |
1960966d MA |
81 | }; |
82 | ||
21dff8cf JS |
83 | /** |
84 | * Boards may call this to offer board-by-board overrides | |
85 | * of the default, global values. | |
86 | */ | |
87 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
88 | { | |
89 | DriveInfo *dinfo; | |
90 | ||
91 | if (max_devs <= 0) { | |
92 | return; | |
93 | } | |
94 | ||
95 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
96 | if (dinfo->type == type) { | |
97 | fprintf(stderr, "Cannot override units-per-bus property of" | |
98 | " the %s interface, because a drive of that type has" | |
99 | " already been added.\n", if_name[type]); | |
100 | g_assert_not_reached(); | |
101 | } | |
102 | } | |
103 | ||
104 | if_max_devs[type] = max_devs; | |
105 | } | |
106 | ||
14bafc54 MA |
107 | /* |
108 | * We automatically delete the drive when a device using it gets | |
109 | * unplugged. Questionable feature, but we can't just drop it. | |
110 | * Device models call blockdev_mark_auto_del() to schedule the | |
111 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
112 | * when deletion is actually safe. | |
113 | */ | |
114 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
115 | { | |
116 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
117 | ||
2d246f01 KW |
118 | if (dinfo && !dinfo->enable_auto_del) { |
119 | return; | |
120 | } | |
121 | ||
12bde0ee PB |
122 | if (bs->job) { |
123 | block_job_cancel(bs->job); | |
124 | } | |
0fc0f1fa RH |
125 | if (dinfo) { |
126 | dinfo->auto_del = 1; | |
127 | } | |
14bafc54 MA |
128 | } |
129 | ||
130 | void blockdev_auto_del(BlockDriverState *bs) | |
131 | { | |
132 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
133 | ||
0fc0f1fa | 134 | if (dinfo && dinfo->auto_del) { |
ae60e8e3 | 135 | drive_del(dinfo); |
14bafc54 MA |
136 | } |
137 | } | |
138 | ||
d8f94e1b JS |
139 | /** |
140 | * Returns the current mapping of how many units per bus | |
141 | * a particular interface can support. | |
142 | * | |
143 | * A positive integer indicates n units per bus. | |
144 | * 0 implies the mapping has not been established. | |
145 | * -1 indicates an invalid BlockInterfaceType was given. | |
146 | */ | |
147 | int drive_get_max_devs(BlockInterfaceType type) | |
148 | { | |
149 | if (type >= IF_IDE && type < IF_COUNT) { | |
150 | return if_max_devs[type]; | |
151 | } | |
152 | ||
153 | return -1; | |
154 | } | |
155 | ||
505a7fb1 MA |
156 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
157 | { | |
158 | int max_devs = if_max_devs[type]; | |
159 | return max_devs ? index / max_devs : 0; | |
160 | } | |
161 | ||
162 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
163 | { | |
164 | int max_devs = if_max_devs[type]; | |
165 | return max_devs ? index % max_devs : index; | |
166 | } | |
167 | ||
2292ddae MA |
168 | QemuOpts *drive_def(const char *optstr) |
169 | { | |
170 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
171 | } | |
172 | ||
173 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 174 | const char *optstr) |
666daa68 | 175 | { |
666daa68 | 176 | QemuOpts *opts; |
2292ddae | 177 | char buf[32]; |
666daa68 | 178 | |
2292ddae | 179 | opts = drive_def(optstr); |
666daa68 MA |
180 | if (!opts) { |
181 | return NULL; | |
182 | } | |
2292ddae MA |
183 | if (type != IF_DEFAULT) { |
184 | qemu_opt_set(opts, "if", if_name[type]); | |
185 | } | |
186 | if (index >= 0) { | |
187 | snprintf(buf, sizeof(buf), "%d", index); | |
188 | qemu_opt_set(opts, "index", buf); | |
189 | } | |
666daa68 MA |
190 | if (file) |
191 | qemu_opt_set(opts, "file", file); | |
192 | return opts; | |
193 | } | |
194 | ||
195 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
196 | { | |
197 | DriveInfo *dinfo; | |
198 | ||
199 | /* seek interface, bus and unit */ | |
200 | ||
201 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
202 | if (dinfo->type == type && | |
203 | dinfo->bus == bus && | |
204 | dinfo->unit == unit) | |
205 | return dinfo; | |
206 | } | |
207 | ||
208 | return NULL; | |
209 | } | |
210 | ||
a66c9dc7 JS |
211 | bool drive_check_orphaned(void) |
212 | { | |
213 | DriveInfo *dinfo; | |
214 | bool rs = false; | |
215 | ||
216 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
217 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ | |
218 | /* Unless this is a default drive, this may be an oversight. */ | |
219 | if (!dinfo->bdrv->dev && !dinfo->is_default && | |
220 | dinfo->type != IF_NONE) { | |
221 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
222 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
223 | dinfo->id, dinfo->bdrv->filename, if_name[dinfo->type], | |
224 | dinfo->bus, dinfo->unit); | |
225 | rs = true; | |
226 | } | |
227 | } | |
228 | ||
229 | return rs; | |
230 | } | |
231 | ||
f1bd51ac MA |
232 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
233 | { | |
234 | return drive_get(type, | |
235 | drive_index_to_bus_id(type, index), | |
236 | drive_index_to_unit_id(type, index)); | |
237 | } | |
238 | ||
666daa68 MA |
239 | int drive_get_max_bus(BlockInterfaceType type) |
240 | { | |
241 | int max_bus; | |
242 | DriveInfo *dinfo; | |
243 | ||
244 | max_bus = -1; | |
245 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
246 | if(dinfo->type == type && | |
247 | dinfo->bus > max_bus) | |
248 | max_bus = dinfo->bus; | |
249 | } | |
250 | return max_bus; | |
251 | } | |
252 | ||
13839974 MA |
253 | /* Get a block device. This should only be used for single-drive devices |
254 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
255 | appropriate bus. */ | |
256 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
257 | { | |
258 | static int next_block_unit[IF_COUNT]; | |
259 | ||
260 | return drive_get(type, 0, next_block_unit[type]++); | |
261 | } | |
262 | ||
e4700e59 | 263 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
264 | { |
265 | DriveInfo *dinfo; | |
266 | ||
267 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
268 | if (dinfo->bdrv == bs) { |
269 | return dinfo; | |
270 | } | |
666daa68 | 271 | } |
e4700e59 | 272 | return NULL; |
666daa68 MA |
273 | } |
274 | ||
666daa68 MA |
275 | static void bdrv_format_print(void *opaque, const char *name) |
276 | { | |
807105a7 | 277 | error_printf(" %s", name); |
666daa68 MA |
278 | } |
279 | ||
ae60e8e3 | 280 | void drive_del(DriveInfo *dinfo) |
666daa68 | 281 | { |
7e7d56d9 | 282 | BlockBackend *blk = dinfo->bdrv->blk; |
26f54e9a | 283 | |
3ae59580 | 284 | bdrv_unref(dinfo->bdrv); |
26f54e9a | 285 | blk_unref(blk); |
3ae59580 MA |
286 | } |
287 | ||
288 | void drive_info_del(DriveInfo *dinfo) | |
289 | { | |
290 | if (!dinfo) { | |
291 | return; | |
292 | } | |
fbf28a43 | 293 | qemu_opts_del(dinfo->opts); |
7267c094 | 294 | g_free(dinfo->id); |
666daa68 | 295 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 296 | g_free(dinfo->serial); |
7267c094 | 297 | g_free(dinfo); |
666daa68 MA |
298 | } |
299 | ||
aa398a5c SH |
300 | typedef struct { |
301 | QEMUBH *bh; | |
fa510ebf FZ |
302 | BlockDriverState *bs; |
303 | } BDRVPutRefBH; | |
aa398a5c | 304 | |
fa510ebf | 305 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 306 | { |
fa510ebf | 307 | BDRVPutRefBH *s = opaque; |
aa398a5c | 308 | |
fa510ebf | 309 | bdrv_unref(s->bs); |
aa398a5c SH |
310 | qemu_bh_delete(s->bh); |
311 | g_free(s); | |
312 | } | |
313 | ||
314 | /* | |
fa510ebf | 315 | * Release a BDS reference in a BH |
aa398a5c | 316 | * |
fa510ebf FZ |
317 | * It is not safe to use bdrv_unref() from a callback function when the callers |
318 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
319 | * the reference. | |
aa398a5c | 320 | */ |
fa510ebf | 321 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 322 | { |
fa510ebf | 323 | BDRVPutRefBH *s; |
aa398a5c | 324 | |
fa510ebf FZ |
325 | s = g_new(BDRVPutRefBH, 1); |
326 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
327 | s->bs = bs; | |
aa398a5c SH |
328 | qemu_bh_schedule(s->bh); |
329 | } | |
330 | ||
b681072d | 331 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
332 | { |
333 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 334 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 335 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 336 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 337 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 338 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 339 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 340 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 341 | } else { |
b681072d KW |
342 | error_setg(errp, "'%s' invalid %s error action", |
343 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
344 | return -1; |
345 | } | |
346 | } | |
347 | ||
cc0681c4 | 348 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 349 | { |
cc0681c4 BC |
350 | if (throttle_conflicting(cfg)) { |
351 | error_setg(errp, "bps/iops/max total values and read/write values" | |
352 | " cannot be used at the same time"); | |
0563e191 ZYW |
353 | return false; |
354 | } | |
355 | ||
cc0681c4 BC |
356 | if (!throttle_is_valid(cfg)) { |
357 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
358 | return false; |
359 | } | |
360 | ||
0563e191 ZYW |
361 | return true; |
362 | } | |
363 | ||
33cb7dc8 KW |
364 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
365 | ||
f298d071 | 366 | /* Takes the ownership of bs_opts */ |
d095b465 | 367 | static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, |
b681072d | 368 | Error **errp) |
666daa68 MA |
369 | { |
370 | const char *buf; | |
666daa68 MA |
371 | int ro = 0; |
372 | int bdrv_flags = 0; | |
373 | int on_read_error, on_write_error; | |
26f54e9a | 374 | BlockBackend *blk; |
a0f1eab1 | 375 | BlockDriverState *bs; |
666daa68 | 376 | DriveInfo *dinfo; |
cc0681c4 | 377 | ThrottleConfig cfg; |
666daa68 | 378 | int snapshot = 0; |
fb0490f6 | 379 | bool copy_on_read; |
666daa68 | 380 | int ret; |
c546194f | 381 | Error *error = NULL; |
0006383e | 382 | QemuOpts *opts; |
0006383e | 383 | const char *id; |
74fe54f2 | 384 | bool has_driver_specific_opts; |
465bee1d | 385 | BlockdevDetectZeroesOptions detect_zeroes; |
6db5f5d6 | 386 | BlockDriver *drv = NULL; |
666daa68 | 387 | |
f298d071 KW |
388 | /* Check common options by copying from bs_opts to opts, all other options |
389 | * stay in bs_opts for processing by bdrv_open(). */ | |
390 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 391 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 392 | if (error) { |
b681072d | 393 | error_propagate(errp, error); |
6376f952 | 394 | goto err_no_opts; |
0006383e KW |
395 | } |
396 | ||
0006383e | 397 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 398 | if (error) { |
b681072d | 399 | error_propagate(errp, error); |
ec9c10d2 | 400 | goto early_err; |
0006383e KW |
401 | } |
402 | ||
403 | if (id) { | |
404 | qdict_del(bs_opts, "id"); | |
405 | } | |
406 | ||
74fe54f2 KW |
407 | has_driver_specific_opts = !!qdict_size(bs_opts); |
408 | ||
666daa68 | 409 | /* extract parameters */ |
666daa68 | 410 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 411 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 412 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 | 413 | |
a9384aff PB |
414 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
415 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 416 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 417 | goto early_err; |
a9384aff PB |
418 | } |
419 | } | |
420 | ||
29c4e2b5 KW |
421 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
422 | bdrv_flags |= BDRV_O_CACHE_WB; | |
423 | } | |
424 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
425 | bdrv_flags |= BDRV_O_NOCACHE; | |
426 | } | |
1df6fa4b | 427 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 428 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
429 | } |
430 | ||
431 | #ifdef CONFIG_LINUX_AIO | |
432 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
433 | if (!strcmp(buf, "native")) { | |
434 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
435 | } else if (!strcmp(buf, "threads")) { | |
436 | /* this is the default */ | |
437 | } else { | |
b681072d | 438 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 439 | goto early_err; |
666daa68 MA |
440 | } |
441 | } | |
442 | #endif | |
443 | ||
444 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
445 | if (is_help_option(buf)) { |
446 | error_printf("Supported formats:"); | |
447 | bdrv_iterate_format(bdrv_format_print, NULL); | |
448 | error_printf("\n"); | |
ec9c10d2 | 449 | goto early_err; |
666daa68 | 450 | } |
74fe54f2 | 451 | |
8f94a6e4 | 452 | drv = bdrv_find_format(buf); |
6db5f5d6 | 453 | if (!drv) { |
b681072d | 454 | error_setg(errp, "'%s' invalid format", buf); |
ec9c10d2 | 455 | goto early_err; |
6db5f5d6 | 456 | } |
666daa68 MA |
457 | } |
458 | ||
0563e191 | 459 | /* disk I/O throttling */ |
cc0681c4 BC |
460 | memset(&cfg, 0, sizeof(cfg)); |
461 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 462 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 463 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 464 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 465 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 466 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 467 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 468 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 469 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 470 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 471 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 472 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 473 | |
3e9fab69 BC |
474 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
475 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
476 | cfg.buckets[THROTTLE_BPS_READ].max = | |
477 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
478 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
479 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
480 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
481 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
482 | cfg.buckets[THROTTLE_OPS_READ].max = | |
483 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
484 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
485 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 486 | |
2024c1df | 487 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
488 | |
489 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 490 | error_propagate(errp, error); |
ec9c10d2 | 491 | goto early_err; |
0563e191 ZYW |
492 | } |
493 | ||
92aa5c6d | 494 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 495 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 496 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 497 | if (error) { |
b681072d | 498 | error_propagate(errp, error); |
ec9c10d2 | 499 | goto early_err; |
666daa68 MA |
500 | } |
501 | } | |
502 | ||
92aa5c6d | 503 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 504 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 505 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 506 | if (error) { |
b681072d | 507 | error_propagate(errp, error); |
ec9c10d2 | 508 | goto early_err; |
666daa68 MA |
509 | } |
510 | } | |
511 | ||
465bee1d | 512 | detect_zeroes = |
9e7dac7c PL |
513 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
514 | qemu_opt_get(opts, "detect-zeroes"), | |
515 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
516 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
517 | &error); | |
465bee1d PL |
518 | if (error) { |
519 | error_propagate(errp, error); | |
520 | goto early_err; | |
521 | } | |
522 | ||
523 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
524 | !(bdrv_flags & BDRV_O_UNMAP)) { | |
525 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
526 | "without setting discard operation to unmap"); | |
527 | goto early_err; | |
528 | } | |
529 | ||
326642bc | 530 | /* init */ |
7e7d56d9 | 531 | blk = blk_new_with_bs(qemu_opts_id(opts), errp); |
26f54e9a MA |
532 | if (!blk) { |
533 | goto early_err; | |
534 | } | |
7e7d56d9 | 535 | bs = blk_bs(blk); |
a0f1eab1 MA |
536 | bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
537 | bs->read_only = ro; | |
538 | bs->detect_zeroes = detect_zeroes; | |
666daa68 | 539 | |
a0f1eab1 | 540 | bdrv_set_on_error(bs, on_read_error, on_write_error); |
abd7f68d | 541 | |
0563e191 | 542 | /* disk I/O throttling */ |
cc0681c4 | 543 | if (throttle_enabled(&cfg)) { |
a0f1eab1 MA |
544 | bdrv_io_limits_enable(bs); |
545 | bdrv_set_io_limits(bs, &cfg); | |
cc0681c4 | 546 | } |
0563e191 | 547 | |
a0f1eab1 MA |
548 | dinfo = g_malloc0(sizeof(*dinfo)); |
549 | dinfo->id = g_strdup(qemu_opts_id(opts)); | |
550 | dinfo->bdrv = bs; | |
551 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); | |
552 | ||
dd5b0d71 | 553 | if (!file || !*file) { |
74fe54f2 | 554 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
555 | file = NULL; |
556 | } else { | |
ec9c10d2 SH |
557 | QDECREF(bs_opts); |
558 | qemu_opts_del(opts); | |
c2ad1b0c KW |
559 | return dinfo; |
560 | } | |
666daa68 MA |
561 | } |
562 | if (snapshot) { | |
563 | /* always use cache=unsafe with snapshot */ | |
564 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
565 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
566 | } | |
567 | ||
fb0490f6 SH |
568 | if (copy_on_read) { |
569 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
570 | } | |
571 | ||
ed9d4205 BC |
572 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
573 | bdrv_flags |= BDRV_O_INCOMING; | |
574 | } | |
575 | ||
666daa68 MA |
576 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; |
577 | ||
74fe54f2 | 578 | QINCREF(bs_opts); |
a0f1eab1 MA |
579 | ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error); |
580 | assert(bs == dinfo->bdrv); | |
0006383e | 581 | |
666daa68 | 582 | if (ret < 0) { |
b681072d KW |
583 | error_setg(errp, "could not open disk image %s: %s", |
584 | file ?: dinfo->id, error_get_pretty(error)); | |
585 | error_free(error); | |
a9ae2bff | 586 | goto err; |
666daa68 MA |
587 | } |
588 | ||
a0f1eab1 | 589 | if (bdrv_key_required(bs)) { |
666daa68 | 590 | autostart = 0; |
a0f1eab1 | 591 | } |
0006383e | 592 | |
74fe54f2 | 593 | QDECREF(bs_opts); |
0006383e KW |
594 | qemu_opts_del(opts); |
595 | ||
666daa68 | 596 | return dinfo; |
a9ae2bff MA |
597 | |
598 | err: | |
a0f1eab1 | 599 | bdrv_unref(bs); |
26f54e9a | 600 | blk_unref(blk); |
ec9c10d2 | 601 | early_err: |
ec9c10d2 | 602 | qemu_opts_del(opts); |
6376f952 MA |
603 | err_no_opts: |
604 | QDECREF(bs_opts); | |
a9ae2bff | 605 | return NULL; |
666daa68 MA |
606 | } |
607 | ||
5abbf0ee KW |
608 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
609 | Error **errp) | |
57975222 KW |
610 | { |
611 | const char *value; | |
612 | ||
613 | value = qemu_opt_get(opts, from); | |
614 | if (value) { | |
5abbf0ee KW |
615 | if (qemu_opt_find(opts, to)) { |
616 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
617 | "same time", to, from); | |
618 | return; | |
619 | } | |
20d6cd47 JL |
620 | } |
621 | ||
622 | /* rename all items in opts */ | |
623 | while ((value = qemu_opt_get(opts, from))) { | |
57975222 KW |
624 | qemu_opt_set(opts, to, value); |
625 | qemu_opt_unset(opts, from); | |
626 | } | |
627 | } | |
628 | ||
33cb7dc8 KW |
629 | QemuOptsList qemu_legacy_drive_opts = { |
630 | .name = "drive", | |
631 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
632 | .desc = { | |
633 | { | |
87a899c5 KW |
634 | .name = "bus", |
635 | .type = QEMU_OPT_NUMBER, | |
636 | .help = "bus number", | |
637 | },{ | |
638 | .name = "unit", | |
639 | .type = QEMU_OPT_NUMBER, | |
640 | .help = "unit number (i.e. lun for scsi)", | |
641 | },{ | |
642 | .name = "index", | |
643 | .type = QEMU_OPT_NUMBER, | |
644 | .help = "index number", | |
645 | },{ | |
33cb7dc8 KW |
646 | .name = "media", |
647 | .type = QEMU_OPT_STRING, | |
648 | .help = "media type (disk, cdrom)", | |
593d464b KW |
649 | },{ |
650 | .name = "if", | |
651 | .type = QEMU_OPT_STRING, | |
652 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
653 | },{ |
654 | .name = "cyls", | |
655 | .type = QEMU_OPT_NUMBER, | |
656 | .help = "number of cylinders (ide disk geometry)", | |
657 | },{ | |
658 | .name = "heads", | |
659 | .type = QEMU_OPT_NUMBER, | |
660 | .help = "number of heads (ide disk geometry)", | |
661 | },{ | |
662 | .name = "secs", | |
663 | .type = QEMU_OPT_NUMBER, | |
664 | .help = "number of sectors (ide disk geometry)", | |
665 | },{ | |
666 | .name = "trans", | |
667 | .type = QEMU_OPT_STRING, | |
668 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
669 | },{ |
670 | .name = "boot", | |
671 | .type = QEMU_OPT_BOOL, | |
672 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
673 | },{ |
674 | .name = "addr", | |
675 | .type = QEMU_OPT_STRING, | |
676 | .help = "pci address (virtio only)", | |
bcf83158 KW |
677 | },{ |
678 | .name = "serial", | |
679 | .type = QEMU_OPT_STRING, | |
680 | .help = "disk serial number", | |
d095b465 HR |
681 | },{ |
682 | .name = "file", | |
683 | .type = QEMU_OPT_STRING, | |
684 | .help = "file name", | |
33cb7dc8 | 685 | }, |
0ebd24e0 KW |
686 | |
687 | /* Options that are passed on, but have special semantics with -drive */ | |
688 | { | |
689 | .name = "read-only", | |
690 | .type = QEMU_OPT_BOOL, | |
691 | .help = "open drive file as read-only", | |
ee13ed1c KW |
692 | },{ |
693 | .name = "rerror", | |
694 | .type = QEMU_OPT_STRING, | |
695 | .help = "read error action", | |
696 | },{ | |
697 | .name = "werror", | |
698 | .type = QEMU_OPT_STRING, | |
699 | .help = "write error action", | |
0ebd24e0 KW |
700 | },{ |
701 | .name = "copy-on-read", | |
702 | .type = QEMU_OPT_BOOL, | |
703 | .help = "copy read data from backing file into image file", | |
704 | }, | |
705 | ||
33cb7dc8 KW |
706 | { /* end of list */ } |
707 | }, | |
708 | }; | |
709 | ||
60e19e06 | 710 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 711 | { |
29c4e2b5 | 712 | const char *value; |
33cb7dc8 | 713 | DriveInfo *dinfo = NULL; |
f298d071 | 714 | QDict *bs_opts; |
33cb7dc8 KW |
715 | QemuOpts *legacy_opts; |
716 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 717 | BlockInterfaceType type; |
b41a7338 | 718 | int cyls, heads, secs, translation; |
87a899c5 | 719 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 720 | const char *devaddr; |
ee13ed1c | 721 | const char *werror, *rerror; |
a7fdbcf0 FZ |
722 | bool read_only = false; |
723 | bool copy_on_read; | |
bcf83158 | 724 | const char *serial; |
d095b465 | 725 | const char *filename; |
33cb7dc8 | 726 | Error *local_err = NULL; |
247147fb | 727 | int i; |
29c4e2b5 | 728 | |
57975222 | 729 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
730 | static const struct { |
731 | const char *from; | |
732 | const char *to; | |
733 | } opt_renames[] = { | |
734 | { "iops", "throttling.iops-total" }, | |
735 | { "iops_rd", "throttling.iops-read" }, | |
736 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 737 | |
247147fb KW |
738 | { "bps", "throttling.bps-total" }, |
739 | { "bps_rd", "throttling.bps-read" }, | |
740 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 741 | |
247147fb KW |
742 | { "iops_max", "throttling.iops-total-max" }, |
743 | { "iops_rd_max", "throttling.iops-read-max" }, | |
744 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 745 | |
247147fb KW |
746 | { "bps_max", "throttling.bps-total-max" }, |
747 | { "bps_rd_max", "throttling.bps-read-max" }, | |
748 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 749 | |
247147fb | 750 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 751 | |
247147fb KW |
752 | { "readonly", "read-only" }, |
753 | }; | |
754 | ||
755 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
756 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
757 | &local_err); | |
758 | if (local_err) { | |
759 | error_report("%s", error_get_pretty(local_err)); | |
760 | error_free(local_err); | |
761 | return NULL; | |
762 | } | |
247147fb | 763 | } |
0f227a94 | 764 | |
29c4e2b5 KW |
765 | value = qemu_opt_get(all_opts, "cache"); |
766 | if (value) { | |
767 | int flags = 0; | |
768 | ||
769 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
770 | error_report("invalid cache option"); | |
771 | return NULL; | |
772 | } | |
773 | ||
774 | /* Specific options take precedence */ | |
775 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
776 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
777 | !!(flags & BDRV_O_CACHE_WB)); | |
778 | } | |
779 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
780 | qemu_opt_set_bool(all_opts, "cache.direct", | |
781 | !!(flags & BDRV_O_NOCACHE)); | |
782 | } | |
783 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
784 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
785 | !!(flags & BDRV_O_NO_FLUSH)); | |
786 | } | |
787 | qemu_opt_unset(all_opts, "cache"); | |
788 | } | |
789 | ||
f298d071 KW |
790 | /* Get a QDict for processing the options */ |
791 | bs_opts = qdict_new(); | |
792 | qemu_opts_to_qdict(all_opts, bs_opts); | |
793 | ||
87ea75d5 PC |
794 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
795 | &error_abort); | |
33cb7dc8 | 796 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 797 | if (local_err) { |
e8817e7b | 798 | error_report("%s", error_get_pretty(local_err)); |
33cb7dc8 KW |
799 | error_free(local_err); |
800 | goto fail; | |
801 | } | |
802 | ||
26929298 KW |
803 | /* Deprecated option boot=[on|off] */ |
804 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
805 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
806 | "ignored. Future versions will reject this parameter. Please " | |
807 | "update your scripts.\n"); | |
808 | } | |
809 | ||
33cb7dc8 KW |
810 | /* Media type */ |
811 | value = qemu_opt_get(legacy_opts, "media"); | |
812 | if (value) { | |
813 | if (!strcmp(value, "disk")) { | |
814 | media = MEDIA_DISK; | |
815 | } else if (!strcmp(value, "cdrom")) { | |
816 | media = MEDIA_CDROM; | |
a7fdbcf0 | 817 | read_only = true; |
33cb7dc8 KW |
818 | } else { |
819 | error_report("'%s' invalid media", value); | |
820 | goto fail; | |
821 | } | |
822 | } | |
823 | ||
0ebd24e0 | 824 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 825 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
826 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
827 | ||
828 | if (read_only && copy_on_read) { | |
829 | error_report("warning: disabling copy-on-read on read-only drive"); | |
830 | copy_on_read = false; | |
831 | } | |
832 | ||
833 | qdict_put(bs_opts, "read-only", | |
834 | qstring_from_str(read_only ? "on" : "off")); | |
835 | qdict_put(bs_opts, "copy-on-read", | |
836 | qstring_from_str(copy_on_read ? "on" :"off")); | |
837 | ||
593d464b KW |
838 | /* Controller type */ |
839 | value = qemu_opt_get(legacy_opts, "if"); | |
840 | if (value) { | |
841 | for (type = 0; | |
842 | type < IF_COUNT && strcmp(value, if_name[type]); | |
843 | type++) { | |
844 | } | |
845 | if (type == IF_COUNT) { | |
846 | error_report("unsupported bus type '%s'", value); | |
847 | goto fail; | |
848 | } | |
849 | } else { | |
850 | type = block_default_type; | |
851 | } | |
852 | ||
b41a7338 KW |
853 | /* Geometry */ |
854 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
855 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
856 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
857 | ||
858 | if (cyls || heads || secs) { | |
859 | if (cyls < 1) { | |
860 | error_report("invalid physical cyls number"); | |
861 | goto fail; | |
862 | } | |
863 | if (heads < 1) { | |
864 | error_report("invalid physical heads number"); | |
865 | goto fail; | |
866 | } | |
867 | if (secs < 1) { | |
868 | error_report("invalid physical secs number"); | |
869 | goto fail; | |
870 | } | |
871 | } | |
872 | ||
873 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
874 | value = qemu_opt_get(legacy_opts, "trans"); | |
875 | if (value != NULL) { | |
876 | if (!cyls) { | |
877 | error_report("'%s' trans must be used with cyls, heads and secs", | |
878 | value); | |
879 | goto fail; | |
880 | } | |
881 | if (!strcmp(value, "none")) { | |
882 | translation = BIOS_ATA_TRANSLATION_NONE; | |
883 | } else if (!strcmp(value, "lba")) { | |
884 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
885 | } else if (!strcmp(value, "large")) { |
886 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
887 | } else if (!strcmp(value, "rechs")) { | |
888 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
889 | } else if (!strcmp(value, "auto")) { |
890 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
891 | } else { | |
892 | error_report("'%s' invalid translation type", value); | |
893 | goto fail; | |
894 | } | |
895 | } | |
896 | ||
897 | if (media == MEDIA_CDROM) { | |
898 | if (cyls || secs || heads) { | |
899 | error_report("CHS can't be set with media=cdrom"); | |
900 | goto fail; | |
901 | } | |
902 | } | |
903 | ||
87a899c5 KW |
904 | /* Device address specified by bus/unit or index. |
905 | * If none was specified, try to find the first free one. */ | |
906 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
907 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
908 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
909 | ||
910 | max_devs = if_max_devs[type]; | |
911 | ||
912 | if (index != -1) { | |
913 | if (bus_id != 0 || unit_id != -1) { | |
914 | error_report("index cannot be used with bus and unit"); | |
915 | goto fail; | |
916 | } | |
917 | bus_id = drive_index_to_bus_id(type, index); | |
918 | unit_id = drive_index_to_unit_id(type, index); | |
919 | } | |
920 | ||
921 | if (unit_id == -1) { | |
922 | unit_id = 0; | |
923 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
924 | unit_id++; | |
925 | if (max_devs && unit_id >= max_devs) { | |
926 | unit_id -= max_devs; | |
927 | bus_id++; | |
928 | } | |
929 | } | |
930 | } | |
931 | ||
932 | if (max_devs && unit_id >= max_devs) { | |
933 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
934 | goto fail; | |
935 | } | |
936 | ||
937 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
938 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
939 | bus_id, unit_id, index); | |
940 | goto fail; | |
941 | } | |
942 | ||
bcf83158 KW |
943 | /* Serial number */ |
944 | serial = qemu_opt_get(legacy_opts, "serial"); | |
945 | ||
87a899c5 KW |
946 | /* no id supplied -> create one */ |
947 | if (qemu_opts_id(all_opts) == NULL) { | |
948 | char *new_id; | |
949 | const char *mediastr = ""; | |
950 | if (type == IF_IDE || type == IF_SCSI) { | |
951 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
952 | } | |
953 | if (max_devs) { | |
954 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
955 | mediastr, unit_id); | |
956 | } else { | |
957 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
958 | mediastr, unit_id); | |
959 | } | |
960 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
961 | g_free(new_id); | |
962 | } | |
963 | ||
394c7d4d KW |
964 | /* Add virtio block device */ |
965 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
966 | if (devaddr && type != IF_VIRTIO) { | |
967 | error_report("addr is not supported by this bus type"); | |
968 | goto fail; | |
969 | } | |
970 | ||
971 | if (type == IF_VIRTIO) { | |
972 | QemuOpts *devopts; | |
87ea75d5 PC |
973 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
974 | &error_abort); | |
394c7d4d KW |
975 | if (arch_type == QEMU_ARCH_S390X) { |
976 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
977 | } else { | |
978 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
979 | } | |
980 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
981 | if (devaddr) { | |
982 | qemu_opt_set(devopts, "addr", devaddr); | |
983 | } | |
984 | } | |
985 | ||
d095b465 HR |
986 | filename = qemu_opt_get(legacy_opts, "file"); |
987 | ||
ee13ed1c KW |
988 | /* Check werror/rerror compatibility with if=... */ |
989 | werror = qemu_opt_get(legacy_opts, "werror"); | |
990 | if (werror != NULL) { | |
991 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
992 | type != IF_NONE) { | |
993 | error_report("werror is not supported by this bus type"); | |
994 | goto fail; | |
995 | } | |
996 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
997 | } | |
998 | ||
999 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
1000 | if (rerror != NULL) { | |
1001 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
1002 | type != IF_NONE) { | |
1003 | error_report("rerror is not supported by this bus type"); | |
1004 | goto fail; | |
1005 | } | |
1006 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
1007 | } | |
1008 | ||
2d246f01 | 1009 | /* Actual block device init: Functionality shared with blockdev-add */ |
ee13ed1c | 1010 | dinfo = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 1011 | bs_opts = NULL; |
2d246f01 | 1012 | if (dinfo == NULL) { |
84d18f06 | 1013 | if (local_err) { |
e8817e7b | 1014 | error_report("%s", error_get_pretty(local_err)); |
b681072d KW |
1015 | error_free(local_err); |
1016 | } | |
2d246f01 | 1017 | goto fail; |
b681072d | 1018 | } else { |
84d18f06 | 1019 | assert(!local_err); |
2d246f01 KW |
1020 | } |
1021 | ||
1022 | /* Set legacy DriveInfo fields */ | |
1023 | dinfo->enable_auto_del = true; | |
f298d071 | 1024 | dinfo->opts = all_opts; |
2d246f01 | 1025 | |
b41a7338 KW |
1026 | dinfo->cyls = cyls; |
1027 | dinfo->heads = heads; | |
1028 | dinfo->secs = secs; | |
1029 | dinfo->trans = translation; | |
1030 | ||
ee13ed1c | 1031 | dinfo->type = type; |
87a899c5 KW |
1032 | dinfo->bus = bus_id; |
1033 | dinfo->unit = unit_id; | |
394c7d4d | 1034 | dinfo->devaddr = devaddr; |
87a899c5 | 1035 | |
bcf83158 KW |
1036 | dinfo->serial = g_strdup(serial); |
1037 | ||
e34ef046 KW |
1038 | switch(type) { |
1039 | case IF_IDE: | |
1040 | case IF_SCSI: | |
1041 | case IF_XEN: | |
1042 | case IF_NONE: | |
1043 | dinfo->media_cd = media == MEDIA_CDROM; | |
1044 | break; | |
1045 | default: | |
1046 | break; | |
1047 | } | |
1048 | ||
2d246f01 | 1049 | fail: |
33cb7dc8 | 1050 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1051 | QDECREF(bs_opts); |
2d246f01 | 1052 | return dinfo; |
57975222 KW |
1053 | } |
1054 | ||
666daa68 MA |
1055 | void do_commit(Monitor *mon, const QDict *qdict) |
1056 | { | |
666daa68 | 1057 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 1058 | BlockDriverState *bs; |
e8877497 | 1059 | int ret; |
666daa68 | 1060 | |
6ab4b5ab | 1061 | if (!strcmp(device, "all")) { |
e8877497 | 1062 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
1063 | } else { |
1064 | bs = bdrv_find(device); | |
ac59eb95 | 1065 | if (!bs) { |
58513bde | 1066 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1067 | return; |
6ab4b5ab | 1068 | } |
2d3735d3 | 1069 | ret = bdrv_commit(bs); |
58513bde JC |
1070 | } |
1071 | if (ret < 0) { | |
1072 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1073 | strerror(-ret)); | |
666daa68 MA |
1074 | } |
1075 | } | |
1076 | ||
6cc2a415 PB |
1077 | static void blockdev_do_action(int kind, void *data, Error **errp) |
1078 | { | |
c8a83e85 KW |
1079 | TransactionAction action; |
1080 | TransactionActionList list; | |
6cc2a415 PB |
1081 | |
1082 | action.kind = kind; | |
1083 | action.data = data; | |
1084 | list.value = &action; | |
1085 | list.next = NULL; | |
1086 | qmp_transaction(&list, errp); | |
1087 | } | |
1088 | ||
0901f67e BC |
1089 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1090 | bool has_node_name, const char *node_name, | |
1091 | const char *snapshot_file, | |
1092 | bool has_snapshot_node_name, | |
1093 | const char *snapshot_node_name, | |
6106e249 | 1094 | bool has_format, const char *format, |
0901f67e | 1095 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1096 | { |
6cc2a415 | 1097 | BlockdevSnapshot snapshot = { |
0901f67e | 1098 | .has_device = has_device, |
6cc2a415 | 1099 | .device = (char *) device, |
0901f67e BC |
1100 | .has_node_name = has_node_name, |
1101 | .node_name = (char *) node_name, | |
6cc2a415 | 1102 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1103 | .has_snapshot_node_name = has_snapshot_node_name, |
1104 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1105 | .has_format = has_format, |
1106 | .format = (char *) format, | |
1107 | .has_mode = has_mode, | |
1108 | .mode = mode, | |
1109 | }; | |
c8a83e85 KW |
1110 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1111 | &snapshot, errp); | |
f8882568 JS |
1112 | } |
1113 | ||
f323bc9e WX |
1114 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1115 | const char *name, | |
1116 | Error **errp) | |
1117 | { | |
1118 | BlockdevSnapshotInternal snapshot = { | |
1119 | .device = (char *) device, | |
1120 | .name = (char *) name | |
1121 | }; | |
1122 | ||
1123 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1124 | &snapshot, errp); | |
1125 | } | |
1126 | ||
44e3e053 WX |
1127 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1128 | bool has_id, | |
1129 | const char *id, | |
1130 | bool has_name, | |
1131 | const char *name, | |
1132 | Error **errp) | |
1133 | { | |
1134 | BlockDriverState *bs = bdrv_find(device); | |
1135 | QEMUSnapshotInfo sn; | |
1136 | Error *local_err = NULL; | |
1137 | SnapshotInfo *info = NULL; | |
1138 | int ret; | |
1139 | ||
1140 | if (!bs) { | |
1141 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1142 | return NULL; | |
1143 | } | |
1144 | ||
1145 | if (!has_id) { | |
1146 | id = NULL; | |
1147 | } | |
1148 | ||
1149 | if (!has_name) { | |
1150 | name = NULL; | |
1151 | } | |
1152 | ||
1153 | if (!id && !name) { | |
1154 | error_setg(errp, "Name or id must be provided"); | |
1155 | return NULL; | |
1156 | } | |
1157 | ||
1158 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); | |
84d18f06 | 1159 | if (local_err) { |
44e3e053 WX |
1160 | error_propagate(errp, local_err); |
1161 | return NULL; | |
1162 | } | |
1163 | if (!ret) { | |
1164 | error_setg(errp, | |
1165 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1166 | "device '%s'", | |
1167 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
1168 | return NULL; | |
1169 | } | |
1170 | ||
1171 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1172 | if (local_err) { |
44e3e053 WX |
1173 | error_propagate(errp, local_err); |
1174 | return NULL; | |
1175 | } | |
1176 | ||
5839e53b | 1177 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1178 | info->id = g_strdup(sn.id_str); |
1179 | info->name = g_strdup(sn.name); | |
1180 | info->date_nsec = sn.date_nsec; | |
1181 | info->date_sec = sn.date_sec; | |
1182 | info->vm_state_size = sn.vm_state_size; | |
1183 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1184 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1185 | ||
1186 | return info; | |
1187 | } | |
8802d1fd JC |
1188 | |
1189 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 1190 | |
ba5d6ab6 | 1191 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1192 | |
1193 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1194 | abort() will be called, clean() will always be called if it present. */ | |
1195 | typedef struct BdrvActionOps { | |
1196 | /* Size of state struct, in bytes. */ | |
1197 | size_t instance_size; | |
1198 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1199 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1200 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1201 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1202 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1203 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1204 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1205 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1206 | } BdrvActionOps; |
1207 | ||
1208 | /* | |
1209 | * This structure must be arranged as first member in child type, assuming | |
1210 | * that compiler will also arrange it to the same address with parent instance. | |
1211 | * Later it will be used in free(). | |
1212 | */ | |
ba5d6ab6 | 1213 | struct BlkTransactionState { |
c8a83e85 | 1214 | TransactionAction *action; |
ba0c86a3 | 1215 | const BdrvActionOps *ops; |
ba5d6ab6 | 1216 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1217 | }; |
1218 | ||
bbe86010 WX |
1219 | /* internal snapshot private data */ |
1220 | typedef struct InternalSnapshotState { | |
1221 | BlkTransactionState common; | |
1222 | BlockDriverState *bs; | |
1223 | QEMUSnapshotInfo sn; | |
1224 | } InternalSnapshotState; | |
1225 | ||
1226 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1227 | Error **errp) | |
1228 | { | |
f70edf99 | 1229 | Error *local_err = NULL; |
bbe86010 WX |
1230 | const char *device; |
1231 | const char *name; | |
1232 | BlockDriverState *bs; | |
1233 | QEMUSnapshotInfo old_sn, *sn; | |
1234 | bool ret; | |
1235 | qemu_timeval tv; | |
1236 | BlockdevSnapshotInternal *internal; | |
1237 | InternalSnapshotState *state; | |
1238 | int ret1; | |
1239 | ||
1240 | g_assert(common->action->kind == | |
1241 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1242 | internal = common->action->blockdev_snapshot_internal_sync; | |
1243 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1244 | ||
1245 | /* 1. parse input */ | |
1246 | device = internal->device; | |
1247 | name = internal->name; | |
1248 | ||
1249 | /* 2. check for validation */ | |
1250 | bs = bdrv_find(device); | |
1251 | if (!bs) { | |
1252 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1253 | return; | |
1254 | } | |
1255 | ||
1256 | if (!bdrv_is_inserted(bs)) { | |
1257 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1258 | return; | |
1259 | } | |
1260 | ||
1261 | if (bdrv_is_read_only(bs)) { | |
1262 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1263 | return; | |
1264 | } | |
1265 | ||
1266 | if (!bdrv_can_snapshot(bs)) { | |
1267 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1268 | bs->drv->format_name, device, "internal snapshot"); | |
1269 | return; | |
1270 | } | |
1271 | ||
1272 | if (!strlen(name)) { | |
1273 | error_setg(errp, "Name is empty"); | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1278 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1279 | &local_err); | |
1280 | if (local_err) { | |
1281 | error_propagate(errp, local_err); | |
bbe86010 WX |
1282 | return; |
1283 | } else if (ret) { | |
1284 | error_setg(errp, | |
1285 | "Snapshot with name '%s' already exists on device '%s'", | |
1286 | name, device); | |
1287 | return; | |
1288 | } | |
1289 | ||
1290 | /* 3. take the snapshot */ | |
1291 | sn = &state->sn; | |
1292 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1293 | qemu_gettimeofday(&tv); | |
1294 | sn->date_sec = tv.tv_sec; | |
1295 | sn->date_nsec = tv.tv_usec * 1000; | |
1296 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1297 | ||
1298 | ret1 = bdrv_snapshot_create(bs, sn); | |
1299 | if (ret1 < 0) { | |
1300 | error_setg_errno(errp, -ret1, | |
1301 | "Failed to create snapshot '%s' on device '%s'", | |
1302 | name, device); | |
1303 | return; | |
1304 | } | |
1305 | ||
1306 | /* 4. succeed, mark a snapshot is created */ | |
1307 | state->bs = bs; | |
1308 | } | |
1309 | ||
1310 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1311 | { | |
1312 | InternalSnapshotState *state = | |
1313 | DO_UPCAST(InternalSnapshotState, common, common); | |
1314 | BlockDriverState *bs = state->bs; | |
1315 | QEMUSnapshotInfo *sn = &state->sn; | |
1316 | Error *local_error = NULL; | |
1317 | ||
1318 | if (!bs) { | |
1319 | return; | |
1320 | } | |
1321 | ||
1322 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1323 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1324 | "device '%s' in abort: %s", | |
1325 | sn->id_str, | |
1326 | sn->name, | |
1327 | bdrv_get_device_name(bs), | |
1328 | error_get_pretty(local_error)); | |
1329 | error_free(local_error); | |
1330 | } | |
1331 | } | |
1332 | ||
ba0c86a3 | 1333 | /* external snapshot private data */ |
ba5d6ab6 SH |
1334 | typedef struct ExternalSnapshotState { |
1335 | BlkTransactionState common; | |
8802d1fd JC |
1336 | BlockDriverState *old_bs; |
1337 | BlockDriverState *new_bs; | |
ba5d6ab6 | 1338 | } ExternalSnapshotState; |
8802d1fd | 1339 | |
ba5d6ab6 | 1340 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1341 | Error **errp) |
1342 | { | |
9b9877ee WX |
1343 | BlockDriver *drv; |
1344 | int flags, ret; | |
0901f67e | 1345 | QDict *options = NULL; |
9b9877ee | 1346 | Error *local_err = NULL; |
0901f67e | 1347 | bool has_device = false; |
e2a31e87 | 1348 | const char *device; |
0901f67e BC |
1349 | bool has_node_name = false; |
1350 | const char *node_name; | |
1351 | bool has_snapshot_node_name = false; | |
1352 | const char *snapshot_node_name; | |
e2a31e87 WX |
1353 | const char *new_image_file; |
1354 | const char *format = "qcow2"; | |
1355 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1356 | ExternalSnapshotState *state = |
1357 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1358 | TransactionAction *action = common->action; |
9b9877ee | 1359 | |
e2a31e87 | 1360 | /* get parameters */ |
c8a83e85 | 1361 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 | 1362 | |
0901f67e | 1363 | has_device = action->blockdev_snapshot_sync->has_device; |
e2a31e87 | 1364 | device = action->blockdev_snapshot_sync->device; |
0901f67e BC |
1365 | has_node_name = action->blockdev_snapshot_sync->has_node_name; |
1366 | node_name = action->blockdev_snapshot_sync->node_name; | |
1367 | has_snapshot_node_name = | |
1368 | action->blockdev_snapshot_sync->has_snapshot_node_name; | |
1369 | snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name; | |
1370 | ||
e2a31e87 WX |
1371 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
1372 | if (action->blockdev_snapshot_sync->has_format) { | |
1373 | format = action->blockdev_snapshot_sync->format; | |
1374 | } | |
1375 | if (action->blockdev_snapshot_sync->has_mode) { | |
1376 | mode = action->blockdev_snapshot_sync->mode; | |
1377 | } | |
1378 | ||
1379 | /* start processing */ | |
9b9877ee WX |
1380 | drv = bdrv_find_format(format); |
1381 | if (!drv) { | |
1382 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1383 | return; | |
1384 | } | |
1385 | ||
0901f67e BC |
1386 | state->old_bs = bdrv_lookup_bs(has_device ? device : NULL, |
1387 | has_node_name ? node_name : NULL, | |
1388 | &local_err); | |
84d18f06 | 1389 | if (local_err) { |
0901f67e BC |
1390 | error_propagate(errp, local_err); |
1391 | return; | |
1392 | } | |
1393 | ||
1394 | if (has_node_name && !has_snapshot_node_name) { | |
1395 | error_setg(errp, "New snapshot node name missing"); | |
1396 | return; | |
1397 | } | |
1398 | ||
1399 | if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) { | |
1400 | error_setg(errp, "New snapshot node name already existing"); | |
9b9877ee WX |
1401 | return; |
1402 | } | |
1403 | ||
ba5d6ab6 | 1404 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1405 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1406 | return; | |
1407 | } | |
1408 | ||
3718d8ab FZ |
1409 | if (bdrv_op_is_blocked(state->old_bs, |
1410 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1411 | return; |
1412 | } | |
1413 | ||
ba5d6ab6 SH |
1414 | if (!bdrv_is_read_only(state->old_bs)) { |
1415 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1416 | error_set(errp, QERR_IO_ERROR); |
1417 | return; | |
1418 | } | |
1419 | } | |
1420 | ||
212a5a8f | 1421 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
f6186f49 BC |
1422 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
1423 | return; | |
1424 | } | |
1425 | ||
ba5d6ab6 | 1426 | flags = state->old_bs->open_flags; |
9b9877ee | 1427 | |
9b9877ee WX |
1428 | /* create new image w/backing file */ |
1429 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1430 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1431 | state->old_bs->filename, |
1432 | state->old_bs->drv->format_name, | |
9b9877ee | 1433 | NULL, -1, flags, &local_err, false); |
84d18f06 | 1434 | if (local_err) { |
9b9877ee WX |
1435 | error_propagate(errp, local_err); |
1436 | return; | |
1437 | } | |
1438 | } | |
1439 | ||
0901f67e BC |
1440 | if (has_snapshot_node_name) { |
1441 | options = qdict_new(); | |
1442 | qdict_put(options, "node-name", | |
1443 | qstring_from_str(snapshot_node_name)); | |
1444 | } | |
1445 | ||
9b9877ee WX |
1446 | /* TODO Inherit bs->options or only take explicit options with an |
1447 | * extended QMP command? */ | |
f67503e5 | 1448 | assert(state->new_bs == NULL); |
ddf5636d | 1449 | ret = bdrv_open(&state->new_bs, new_image_file, NULL, options, |
34b5d2c6 | 1450 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
f67503e5 | 1451 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1452 | if (ret != 0) { |
34b5d2c6 | 1453 | error_propagate(errp, local_err); |
9b9877ee WX |
1454 | } |
1455 | } | |
1456 | ||
ba5d6ab6 | 1457 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1458 | { |
ba5d6ab6 SH |
1459 | ExternalSnapshotState *state = |
1460 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1461 | |
ba5d6ab6 SH |
1462 | /* This removes our old bs and adds the new bs */ |
1463 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1464 | /* We don't need (or want) to use the transactional |
1465 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1466 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1467 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1468 | NULL); |
1469 | } | |
1470 | ||
ba5d6ab6 | 1471 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1472 | { |
ba5d6ab6 SH |
1473 | ExternalSnapshotState *state = |
1474 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1475 | if (state->new_bs) { | |
4f6fd349 | 1476 | bdrv_unref(state->new_bs); |
96b86bf7 WX |
1477 | } |
1478 | } | |
1479 | ||
3037f364 SH |
1480 | typedef struct DriveBackupState { |
1481 | BlkTransactionState common; | |
1482 | BlockDriverState *bs; | |
1483 | BlockJob *job; | |
1484 | } DriveBackupState; | |
1485 | ||
1486 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1487 | { | |
1488 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1489 | DriveBackup *backup; | |
1490 | Error *local_err = NULL; | |
1491 | ||
1492 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1493 | backup = common->action->drive_backup; | |
1494 | ||
1495 | qmp_drive_backup(backup->device, backup->target, | |
1496 | backup->has_format, backup->format, | |
b53169ea | 1497 | backup->sync, |
3037f364 SH |
1498 | backup->has_mode, backup->mode, |
1499 | backup->has_speed, backup->speed, | |
1500 | backup->has_on_source_error, backup->on_source_error, | |
1501 | backup->has_on_target_error, backup->on_target_error, | |
1502 | &local_err); | |
84d18f06 | 1503 | if (local_err) { |
3037f364 SH |
1504 | error_propagate(errp, local_err); |
1505 | state->bs = NULL; | |
1506 | state->job = NULL; | |
1507 | return; | |
1508 | } | |
1509 | ||
1510 | state->bs = bdrv_find(backup->device); | |
1511 | state->job = state->bs->job; | |
1512 | } | |
1513 | ||
1514 | static void drive_backup_abort(BlkTransactionState *common) | |
1515 | { | |
1516 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1517 | BlockDriverState *bs = state->bs; | |
1518 | ||
1519 | /* Only cancel if it's the job we started */ | |
1520 | if (bs && bs->job && bs->job == state->job) { | |
1521 | block_job_cancel_sync(bs->job); | |
1522 | } | |
1523 | } | |
1524 | ||
78b18b78 SH |
1525 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1526 | { | |
1527 | error_setg(errp, "Transaction aborted using Abort action"); | |
1528 | } | |
1529 | ||
1530 | static void abort_commit(BlkTransactionState *common) | |
1531 | { | |
dfc6f865 | 1532 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1533 | } |
1534 | ||
ba0c86a3 | 1535 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1536 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1537 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1538 | .prepare = external_snapshot_prepare, |
1539 | .commit = external_snapshot_commit, | |
1540 | .abort = external_snapshot_abort, | |
1541 | }, | |
3037f364 SH |
1542 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1543 | .instance_size = sizeof(DriveBackupState), | |
1544 | .prepare = drive_backup_prepare, | |
1545 | .abort = drive_backup_abort, | |
1546 | }, | |
78b18b78 SH |
1547 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1548 | .instance_size = sizeof(BlkTransactionState), | |
1549 | .prepare = abort_prepare, | |
1550 | .commit = abort_commit, | |
1551 | }, | |
bbe86010 WX |
1552 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1553 | .instance_size = sizeof(InternalSnapshotState), | |
1554 | .prepare = internal_snapshot_prepare, | |
1555 | .abort = internal_snapshot_abort, | |
1556 | }, | |
ba0c86a3 WX |
1557 | }; |
1558 | ||
8802d1fd JC |
1559 | /* |
1560 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1561 | * then we do not pivot any of the devices in the group, and abandon the | |
1562 | * snapshots | |
1563 | */ | |
c8a83e85 | 1564 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1565 | { |
c8a83e85 | 1566 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1567 | BlkTransactionState *state, *next; |
43e17041 | 1568 | Error *local_err = NULL; |
8802d1fd | 1569 | |
ba5d6ab6 | 1570 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1571 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1572 | ||
1573 | /* drain all i/o before any snapshots */ | |
1574 | bdrv_drain_all(); | |
1575 | ||
1576 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1577 | while (NULL != dev_entry) { | |
c8a83e85 | 1578 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1579 | const BdrvActionOps *ops; |
52e7c241 | 1580 | |
8802d1fd JC |
1581 | dev_info = dev_entry->value; |
1582 | dev_entry = dev_entry->next; | |
1583 | ||
ba0c86a3 WX |
1584 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1585 | ||
1586 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1587 | assert(ops->instance_size > 0); |
1588 | ||
ba5d6ab6 SH |
1589 | state = g_malloc0(ops->instance_size); |
1590 | state->ops = ops; | |
1591 | state->action = dev_info; | |
1592 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1593 | |
ba5d6ab6 | 1594 | state->ops->prepare(state, &local_err); |
84d18f06 | 1595 | if (local_err) { |
ba0c86a3 WX |
1596 | error_propagate(errp, local_err); |
1597 | goto delete_and_fail; | |
8802d1fd | 1598 | } |
8802d1fd JC |
1599 | } |
1600 | ||
ba5d6ab6 | 1601 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1602 | if (state->ops->commit) { |
1603 | state->ops->commit(state); | |
1604 | } | |
8802d1fd JC |
1605 | } |
1606 | ||
1607 | /* success */ | |
1608 | goto exit; | |
1609 | ||
1610 | delete_and_fail: | |
1611 | /* | |
1612 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1613 | * the original bs for all images | |
1614 | */ | |
ba5d6ab6 SH |
1615 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1616 | if (state->ops->abort) { | |
1617 | state->ops->abort(state); | |
ba0c86a3 | 1618 | } |
8802d1fd JC |
1619 | } |
1620 | exit: | |
ba5d6ab6 SH |
1621 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1622 | if (state->ops->clean) { | |
1623 | state->ops->clean(state); | |
ba0c86a3 | 1624 | } |
ba5d6ab6 | 1625 | g_free(state); |
8802d1fd | 1626 | } |
8802d1fd JC |
1627 | } |
1628 | ||
1629 | ||
92d48558 | 1630 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1631 | { |
3718d8ab | 1632 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
2d3735d3 SH |
1633 | return; |
1634 | } | |
2c6942fa | 1635 | if (!bdrv_dev_has_removable_media(bs)) { |
f231b88d CR |
1636 | error_setg(errp, "Device '%s' is not removable", |
1637 | bdrv_get_device_name(bs)); | |
92d48558 | 1638 | return; |
ea8f942f | 1639 | } |
92d48558 | 1640 | |
025ccaa7 PB |
1641 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1642 | bdrv_dev_eject_request(bs, force); | |
1643 | if (!force) { | |
f231b88d CR |
1644 | error_setg(errp, "Device '%s' is locked", |
1645 | bdrv_get_device_name(bs)); | |
92d48558 | 1646 | return; |
025ccaa7 | 1647 | } |
666daa68 | 1648 | } |
92d48558 | 1649 | |
3b5276b5 | 1650 | bdrv_close(bs); |
666daa68 MA |
1651 | } |
1652 | ||
c245b6a3 | 1653 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1654 | { |
1655 | BlockDriverState *bs; | |
666daa68 | 1656 | |
c245b6a3 | 1657 | bs = bdrv_find(device); |
666daa68 | 1658 | if (!bs) { |
c245b6a3 LC |
1659 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1660 | return; | |
92d48558 LC |
1661 | } |
1662 | ||
c245b6a3 | 1663 | eject_device(bs, force, errp); |
666daa68 MA |
1664 | } |
1665 | ||
12d3ba82 BC |
1666 | void qmp_block_passwd(bool has_device, const char *device, |
1667 | bool has_node_name, const char *node_name, | |
1668 | const char *password, Error **errp) | |
666daa68 | 1669 | { |
12d3ba82 | 1670 | Error *local_err = NULL; |
666daa68 MA |
1671 | BlockDriverState *bs; |
1672 | int err; | |
1673 | ||
12d3ba82 BC |
1674 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1675 | has_node_name ? node_name : NULL, | |
1676 | &local_err); | |
84d18f06 | 1677 | if (local_err) { |
12d3ba82 | 1678 | error_propagate(errp, local_err); |
a4dea8a9 | 1679 | return; |
666daa68 MA |
1680 | } |
1681 | ||
a4dea8a9 | 1682 | err = bdrv_set_key(bs, password); |
666daa68 | 1683 | if (err == -EINVAL) { |
a4dea8a9 LC |
1684 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1685 | return; | |
666daa68 | 1686 | } else if (err < 0) { |
a4dea8a9 LC |
1687 | error_set(errp, QERR_INVALID_PASSWORD); |
1688 | return; | |
666daa68 | 1689 | } |
666daa68 MA |
1690 | } |
1691 | ||
333a96ec LC |
1692 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1693 | int bdrv_flags, BlockDriver *drv, | |
1694 | const char *password, Error **errp) | |
1695 | { | |
34b5d2c6 | 1696 | Error *local_err = NULL; |
0eef407c LC |
1697 | int ret; |
1698 | ||
ddf5636d | 1699 | ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1700 | if (ret < 0) { |
34b5d2c6 | 1701 | error_propagate(errp, local_err); |
333a96ec LC |
1702 | return; |
1703 | } | |
1704 | ||
1705 | if (bdrv_key_required(bs)) { | |
1706 | if (password) { | |
1707 | if (bdrv_set_key(bs, password) < 0) { | |
1708 | error_set(errp, QERR_INVALID_PASSWORD); | |
1709 | } | |
1710 | } else { | |
1711 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1712 | bdrv_get_encrypted_filename(bs)); | |
1713 | } | |
1714 | } else if (password) { | |
1715 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1720 | const char *format, Error **errp) |
666daa68 MA |
1721 | { |
1722 | BlockDriverState *bs; | |
1723 | BlockDriver *drv = NULL; | |
1724 | int bdrv_flags; | |
92d48558 | 1725 | Error *err = NULL; |
666daa68 MA |
1726 | |
1727 | bs = bdrv_find(device); | |
1728 | if (!bs) { | |
333a96ec LC |
1729 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1730 | return; | |
666daa68 | 1731 | } |
333a96ec LC |
1732 | |
1733 | if (format) { | |
b64ec4e4 | 1734 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1735 | if (!drv) { |
333a96ec LC |
1736 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1737 | return; | |
666daa68 MA |
1738 | } |
1739 | } | |
333a96ec | 1740 | |
92d48558 | 1741 | eject_device(bs, 0, &err); |
84d18f06 | 1742 | if (err) { |
333a96ec LC |
1743 | error_propagate(errp, err); |
1744 | return; | |
666daa68 | 1745 | } |
333a96ec | 1746 | |
528f7663 | 1747 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1748 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1749 | |
1750 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1751 | } |
9063f814 | 1752 | |
727f005e | 1753 | /* throttling disk I/O limits */ |
80047da5 | 1754 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1755 | int64_t bps_wr, |
1756 | int64_t iops, | |
1757 | int64_t iops_rd, | |
1758 | int64_t iops_wr, | |
1759 | bool has_bps_max, | |
1760 | int64_t bps_max, | |
1761 | bool has_bps_rd_max, | |
1762 | int64_t bps_rd_max, | |
1763 | bool has_bps_wr_max, | |
1764 | int64_t bps_wr_max, | |
1765 | bool has_iops_max, | |
1766 | int64_t iops_max, | |
1767 | bool has_iops_rd_max, | |
1768 | int64_t iops_rd_max, | |
1769 | bool has_iops_wr_max, | |
2024c1df BC |
1770 | int64_t iops_wr_max, |
1771 | bool has_iops_size, | |
1772 | int64_t iops_size, Error **errp) | |
727f005e | 1773 | { |
cc0681c4 | 1774 | ThrottleConfig cfg; |
727f005e | 1775 | BlockDriverState *bs; |
b15446fd | 1776 | AioContext *aio_context; |
727f005e | 1777 | |
80047da5 | 1778 | bs = bdrv_find(device); |
727f005e | 1779 | if (!bs) { |
80047da5 LC |
1780 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1781 | return; | |
727f005e ZYW |
1782 | } |
1783 | ||
cc0681c4 BC |
1784 | memset(&cfg, 0, sizeof(cfg)); |
1785 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1786 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1787 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1788 | ||
1789 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1790 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1791 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1792 | ||
3e9fab69 BC |
1793 | if (has_bps_max) { |
1794 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1795 | } | |
1796 | if (has_bps_rd_max) { | |
1797 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1798 | } | |
1799 | if (has_bps_wr_max) { | |
1800 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1801 | } | |
1802 | if (has_iops_max) { | |
1803 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1804 | } | |
1805 | if (has_iops_rd_max) { | |
1806 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1807 | } | |
1808 | if (has_iops_wr_max) { | |
1809 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1810 | } | |
727f005e | 1811 | |
2024c1df BC |
1812 | if (has_iops_size) { |
1813 | cfg.op_size = iops_size; | |
1814 | } | |
cc0681c4 BC |
1815 | |
1816 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1817 | return; |
727f005e ZYW |
1818 | } |
1819 | ||
b15446fd SH |
1820 | aio_context = bdrv_get_aio_context(bs); |
1821 | aio_context_acquire(aio_context); | |
1822 | ||
cc0681c4 | 1823 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1824 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1825 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1826 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1827 | } |
1828 | ||
1829 | if (bs->io_limits_enabled) { | |
1830 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1831 | } |
b15446fd SH |
1832 | |
1833 | aio_context_release(aio_context); | |
727f005e ZYW |
1834 | } |
1835 | ||
9063f814 RH |
1836 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1837 | { | |
1838 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 1839 | BlockBackend *blk; |
9063f814 | 1840 | BlockDriverState *bs; |
48f364dd | 1841 | DriveInfo *dinfo; |
8ad4202b | 1842 | AioContext *aio_context; |
3718d8ab | 1843 | Error *local_err = NULL; |
9063f814 | 1844 | |
7e7d56d9 MA |
1845 | blk = blk_by_name(id); |
1846 | if (!blk) { | |
b1422f20 | 1847 | error_report("Device '%s' not found", id); |
9063f814 RH |
1848 | return -1; |
1849 | } | |
7e7d56d9 | 1850 | bs = blk_bs(blk); |
8ad4202b | 1851 | |
48f364dd MA |
1852 | dinfo = drive_get_by_blockdev(bs); |
1853 | if (dinfo && !dinfo->enable_auto_del) { | |
1854 | error_report("Deleting device added with blockdev-add" | |
1855 | " is not supported"); | |
1856 | return -1; | |
1857 | } | |
1858 | ||
8ad4202b SH |
1859 | aio_context = bdrv_get_aio_context(bs); |
1860 | aio_context_acquire(aio_context); | |
1861 | ||
3718d8ab FZ |
1862 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
1863 | error_report("%s", error_get_pretty(local_err)); | |
1864 | error_free(local_err); | |
8ad4202b | 1865 | aio_context_release(aio_context); |
8591675f MT |
1866 | return -1; |
1867 | } | |
9063f814 RH |
1868 | |
1869 | /* quiesce block driver; prevent further io */ | |
922453bc | 1870 | bdrv_drain_all(); |
9063f814 RH |
1871 | bdrv_flush(bs); |
1872 | bdrv_close(bs); | |
1873 | ||
fa879d62 | 1874 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1875 | * then we need to make the drive anonymous until the device |
1876 | * can be removed. If this is a drive with no device backing | |
1877 | * then we can just get rid of the block driver state right here. | |
1878 | */ | |
fa879d62 | 1879 | if (bdrv_get_attached_dev(bs)) { |
7e7d56d9 | 1880 | blk_hide_on_behalf_of_do_drive_del(blk); |
293c51a6 SH |
1881 | /* Further I/O must not pause the guest */ |
1882 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1883 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 1884 | } else { |
48f364dd | 1885 | drive_del(dinfo); |
9063f814 RH |
1886 | } |
1887 | ||
8ad4202b | 1888 | aio_context_release(aio_context); |
9063f814 RH |
1889 | return 0; |
1890 | } | |
6d4a2b3a | 1891 | |
3b1dbd11 BC |
1892 | void qmp_block_resize(bool has_device, const char *device, |
1893 | bool has_node_name, const char *node_name, | |
1894 | int64_t size, Error **errp) | |
6d4a2b3a | 1895 | { |
3b1dbd11 | 1896 | Error *local_err = NULL; |
6d4a2b3a | 1897 | BlockDriverState *bs; |
927e0e76 | 1898 | AioContext *aio_context; |
8732901e | 1899 | int ret; |
6d4a2b3a | 1900 | |
3b1dbd11 BC |
1901 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1902 | has_node_name ? node_name : NULL, | |
1903 | &local_err); | |
84d18f06 | 1904 | if (local_err) { |
3b1dbd11 BC |
1905 | error_propagate(errp, local_err); |
1906 | return; | |
1907 | } | |
1908 | ||
927e0e76 SH |
1909 | aio_context = bdrv_get_aio_context(bs); |
1910 | aio_context_acquire(aio_context); | |
1911 | ||
3b1dbd11 BC |
1912 | if (!bdrv_is_first_non_filter(bs)) { |
1913 | error_set(errp, QERR_FEATURE_DISABLED, "resize"); | |
927e0e76 | 1914 | goto out; |
6d4a2b3a CH |
1915 | } |
1916 | ||
1917 | if (size < 0) { | |
939a1cc3 | 1918 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 1919 | goto out; |
6d4a2b3a CH |
1920 | } |
1921 | ||
9c75e168 JC |
1922 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
1923 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927e0e76 | 1924 | goto out; |
9c75e168 JC |
1925 | } |
1926 | ||
92b7a08d PL |
1927 | /* complete all in-flight operations before resizing the device */ |
1928 | bdrv_drain_all(); | |
1929 | ||
8732901e KW |
1930 | ret = bdrv_truncate(bs, size); |
1931 | switch (ret) { | |
939a1cc3 SH |
1932 | case 0: |
1933 | break; | |
1934 | case -ENOMEDIUM: | |
1935 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1936 | break; | |
1937 | case -ENOTSUP: | |
1938 | error_set(errp, QERR_UNSUPPORTED); | |
1939 | break; | |
1940 | case -EACCES: | |
1941 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1942 | break; | |
1943 | case -EBUSY: | |
1944 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1945 | break; | |
1946 | default: | |
8732901e | 1947 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1948 | break; |
6d4a2b3a | 1949 | } |
927e0e76 SH |
1950 | |
1951 | out: | |
1952 | aio_context_release(aio_context); | |
6d4a2b3a | 1953 | } |
12bd451f | 1954 | |
9abf2dba | 1955 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1956 | { |
1957 | BlockDriverState *bs = opaque; | |
bcada37b | 1958 | const char *msg = NULL; |
12bd451f | 1959 | |
9abf2dba | 1960 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1961 | |
1962 | assert(bs->job); | |
bcada37b | 1963 | |
12bd451f | 1964 | if (ret < 0) { |
bcada37b | 1965 | msg = strerror(-ret); |
12bd451f SH |
1966 | } |
1967 | ||
370521a1 | 1968 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 1969 | block_job_event_cancelled(bs->job); |
370521a1 | 1970 | } else { |
bcada37b | 1971 | block_job_event_completed(bs->job, msg); |
370521a1 | 1972 | } |
aa398a5c | 1973 | |
fa510ebf | 1974 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
1975 | } |
1976 | ||
13d8cc51 JC |
1977 | void qmp_block_stream(const char *device, |
1978 | bool has_base, const char *base, | |
1979 | bool has_backing_file, const char *backing_file, | |
1980 | bool has_speed, int64_t speed, | |
1d809098 PB |
1981 | bool has_on_error, BlockdevOnError on_error, |
1982 | Error **errp) | |
12bd451f SH |
1983 | { |
1984 | BlockDriverState *bs; | |
c8c3080f | 1985 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1986 | Error *local_err = NULL; |
13d8cc51 | 1987 | const char *base_name = NULL; |
12bd451f | 1988 | |
1d809098 PB |
1989 | if (!has_on_error) { |
1990 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1991 | } | |
1992 | ||
12bd451f SH |
1993 | bs = bdrv_find(device); |
1994 | if (!bs) { | |
1995 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1996 | return; | |
1997 | } | |
1998 | ||
628ff683 FZ |
1999 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
2000 | return; | |
2001 | } | |
2002 | ||
13d8cc51 | 2003 | if (has_base) { |
c8c3080f MT |
2004 | base_bs = bdrv_find_backing_image(bs, base); |
2005 | if (base_bs == NULL) { | |
2006 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
2007 | return; | |
2008 | } | |
13d8cc51 | 2009 | base_name = base; |
12bd451f SH |
2010 | } |
2011 | ||
13d8cc51 JC |
2012 | /* if we are streaming the entire chain, the result will have no backing |
2013 | * file, and specifying one is therefore an error */ | |
2014 | if (base_bs == NULL && has_backing_file) { | |
2015 | error_setg(errp, "backing file specified, but streaming the " | |
2016 | "entire chain"); | |
2017 | return; | |
2018 | } | |
2019 | ||
2020 | /* backing_file string overrides base bs filename */ | |
2021 | base_name = has_backing_file ? backing_file : base_name; | |
2022 | ||
2023 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 2024 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 2025 | if (local_err) { |
fd7f8c65 SH |
2026 | error_propagate(errp, local_err); |
2027 | return; | |
12bd451f SH |
2028 | } |
2029 | ||
2030 | trace_qmp_block_stream(bs, bs->job); | |
2031 | } | |
2d47c6e9 | 2032 | |
ed61fc10 | 2033 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
2034 | bool has_base, const char *base, |
2035 | bool has_top, const char *top, | |
54e26900 | 2036 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
2037 | bool has_speed, int64_t speed, |
2038 | Error **errp) | |
2039 | { | |
2040 | BlockDriverState *bs; | |
2041 | BlockDriverState *base_bs, *top_bs; | |
2042 | Error *local_err = NULL; | |
2043 | /* This will be part of the QMP command, if/when the | |
2044 | * BlockdevOnError change for blkmirror makes it in | |
2045 | */ | |
92aa5c6d | 2046 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 2047 | |
54504663 HR |
2048 | if (!has_speed) { |
2049 | speed = 0; | |
2050 | } | |
2051 | ||
ed61fc10 JC |
2052 | /* drain all i/o before commits */ |
2053 | bdrv_drain_all(); | |
2054 | ||
7676e2c5 JC |
2055 | /* Important Note: |
2056 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
2057 | * live commit feature versions; for this to work, we must make sure to | |
2058 | * perform the device lookup before any generic errors that may occur in a | |
2059 | * scenario in which all optional arguments are omitted. */ | |
ed61fc10 JC |
2060 | bs = bdrv_find(device); |
2061 | if (!bs) { | |
2062 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2063 | return; | |
628ff683 FZ |
2064 | } |
2065 | ||
2066 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) { | |
2067 | return; | |
ed61fc10 | 2068 | } |
ed61fc10 JC |
2069 | |
2070 | /* default top_bs is the active layer */ | |
2071 | top_bs = bs; | |
2072 | ||
7676e2c5 | 2073 | if (has_top && top) { |
ed61fc10 JC |
2074 | if (strcmp(bs->filename, top) != 0) { |
2075 | top_bs = bdrv_find_backing_image(bs, top); | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | if (top_bs == NULL) { | |
2080 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
2081 | return; | |
2082 | } | |
2083 | ||
d5208c45 JC |
2084 | if (has_base && base) { |
2085 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2086 | } else { | |
2087 | base_bs = bdrv_find_base(top_bs); | |
2088 | } | |
2089 | ||
2090 | if (base_bs == NULL) { | |
2091 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
2092 | return; | |
2093 | } | |
2094 | ||
7676e2c5 JC |
2095 | /* Do not allow attempts to commit an image into itself */ |
2096 | if (top_bs == base_bs) { | |
2097 | error_setg(errp, "cannot commit an image into itself"); | |
2098 | return; | |
2099 | } | |
2100 | ||
20a63d2c | 2101 | if (top_bs == bs) { |
54e26900 JC |
2102 | if (has_backing_file) { |
2103 | error_setg(errp, "'backing-file' specified," | |
2104 | " but 'top' is the active layer"); | |
2105 | return; | |
2106 | } | |
20a63d2c FZ |
2107 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
2108 | bs, &local_err); | |
2109 | } else { | |
2110 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 2111 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 2112 | } |
ed61fc10 JC |
2113 | if (local_err != NULL) { |
2114 | error_propagate(errp, local_err); | |
2115 | return; | |
2116 | } | |
ed61fc10 JC |
2117 | } |
2118 | ||
99a9addf SH |
2119 | void qmp_drive_backup(const char *device, const char *target, |
2120 | bool has_format, const char *format, | |
b53169ea | 2121 | enum MirrorSyncMode sync, |
99a9addf SH |
2122 | bool has_mode, enum NewImageMode mode, |
2123 | bool has_speed, int64_t speed, | |
2124 | bool has_on_source_error, BlockdevOnError on_source_error, | |
2125 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2126 | Error **errp) | |
2127 | { | |
2128 | BlockDriverState *bs; | |
2129 | BlockDriverState *target_bs; | |
fc5d3f84 | 2130 | BlockDriverState *source = NULL; |
99a9addf SH |
2131 | BlockDriver *drv = NULL; |
2132 | Error *local_err = NULL; | |
2133 | int flags; | |
2134 | int64_t size; | |
2135 | int ret; | |
2136 | ||
2137 | if (!has_speed) { | |
2138 | speed = 0; | |
2139 | } | |
2140 | if (!has_on_source_error) { | |
2141 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2142 | } | |
2143 | if (!has_on_target_error) { | |
2144 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2145 | } | |
2146 | if (!has_mode) { | |
2147 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2148 | } | |
2149 | ||
2150 | bs = bdrv_find(device); | |
2151 | if (!bs) { | |
2152 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2153 | return; | |
2154 | } | |
2155 | ||
2156 | if (!bdrv_is_inserted(bs)) { | |
2157 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2158 | return; | |
2159 | } | |
2160 | ||
2161 | if (!has_format) { | |
2162 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2163 | } | |
2164 | if (format) { | |
2165 | drv = bdrv_find_format(format); | |
2166 | if (!drv) { | |
2167 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2168 | return; | |
2169 | } | |
2170 | } | |
2171 | ||
3718d8ab | 2172 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
99a9addf SH |
2173 | return; |
2174 | } | |
2175 | ||
2176 | flags = bs->open_flags | BDRV_O_RDWR; | |
2177 | ||
fc5d3f84 IM |
2178 | /* See if we have a backing HD we can use to create our new image |
2179 | * on top of. */ | |
2180 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
2181 | source = bs->backing_hd; | |
2182 | if (!source) { | |
2183 | sync = MIRROR_SYNC_MODE_FULL; | |
2184 | } | |
2185 | } | |
2186 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
2187 | source = bs; | |
2188 | } | |
2189 | ||
99a9addf SH |
2190 | size = bdrv_getlength(bs); |
2191 | if (size < 0) { | |
2192 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
2197 | assert(format && drv); | |
fc5d3f84 IM |
2198 | if (source) { |
2199 | bdrv_img_create(target, format, source->filename, | |
2200 | source->drv->format_name, NULL, | |
2201 | size, flags, &local_err, false); | |
2202 | } else { | |
2203 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
2204 | size, flags, &local_err, false); | |
2205 | } | |
99a9addf SH |
2206 | } |
2207 | ||
84d18f06 | 2208 | if (local_err) { |
99a9addf SH |
2209 | error_propagate(errp, local_err); |
2210 | return; | |
2211 | } | |
2212 | ||
f67503e5 | 2213 | target_bs = NULL; |
ddf5636d | 2214 | ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err); |
99a9addf | 2215 | if (ret < 0) { |
34b5d2c6 | 2216 | error_propagate(errp, local_err); |
99a9addf SH |
2217 | return; |
2218 | } | |
2219 | ||
fc5d3f84 | 2220 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
2221 | block_job_cb, bs, &local_err); |
2222 | if (local_err != NULL) { | |
4f6fd349 | 2223 | bdrv_unref(target_bs); |
99a9addf SH |
2224 | error_propagate(errp, local_err); |
2225 | return; | |
2226 | } | |
99a9addf SH |
2227 | } |
2228 | ||
c13163fb BC |
2229 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
2230 | { | |
2231 | return bdrv_named_nodes_list(); | |
2232 | } | |
2233 | ||
08e4ed6c PB |
2234 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
2235 | ||
d9b902db PB |
2236 | void qmp_drive_mirror(const char *device, const char *target, |
2237 | bool has_format, const char *format, | |
4c828dc6 | 2238 | bool has_node_name, const char *node_name, |
09158f00 | 2239 | bool has_replaces, const char *replaces, |
d9b902db PB |
2240 | enum MirrorSyncMode sync, |
2241 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 2242 | bool has_speed, int64_t speed, |
eee13dfe | 2243 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 2244 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
2245 | bool has_on_source_error, BlockdevOnError on_source_error, |
2246 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2247 | Error **errp) | |
d9b902db | 2248 | { |
d9b902db PB |
2249 | BlockDriverState *bs; |
2250 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
2251 | BlockDriver *drv = NULL; |
2252 | Error *local_err = NULL; | |
4c828dc6 | 2253 | QDict *options = NULL; |
d9b902db | 2254 | int flags; |
ac3c5d83 | 2255 | int64_t size; |
d9b902db PB |
2256 | int ret; |
2257 | ||
2258 | if (!has_speed) { | |
2259 | speed = 0; | |
2260 | } | |
b952b558 PB |
2261 | if (!has_on_source_error) { |
2262 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2263 | } | |
2264 | if (!has_on_target_error) { | |
2265 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2266 | } | |
d9b902db PB |
2267 | if (!has_mode) { |
2268 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2269 | } | |
eee13dfe PB |
2270 | if (!has_granularity) { |
2271 | granularity = 0; | |
2272 | } | |
08e4ed6c PB |
2273 | if (!has_buf_size) { |
2274 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
2275 | } | |
2276 | ||
eee13dfe | 2277 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
3cbbe9fd SH |
2278 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
2279 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
2280 | return; |
2281 | } | |
2282 | if (granularity & (granularity - 1)) { | |
3cbbe9fd | 2283 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2"); |
eee13dfe PB |
2284 | return; |
2285 | } | |
d9b902db PB |
2286 | |
2287 | bs = bdrv_find(device); | |
2288 | if (!bs) { | |
2289 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2290 | return; | |
2291 | } | |
2292 | ||
2293 | if (!bdrv_is_inserted(bs)) { | |
2294 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2295 | return; | |
2296 | } | |
2297 | ||
2298 | if (!has_format) { | |
2299 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2300 | } | |
2301 | if (format) { | |
2302 | drv = bdrv_find_format(format); | |
2303 | if (!drv) { | |
2304 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
2305 | return; | |
2306 | } | |
2307 | } | |
2308 | ||
3718d8ab | 2309 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
d9b902db PB |
2310 | return; |
2311 | } | |
2312 | ||
2313 | flags = bs->open_flags | BDRV_O_RDWR; | |
2314 | source = bs->backing_hd; | |
2315 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2316 | sync = MIRROR_SYNC_MODE_FULL; | |
2317 | } | |
117e0c82 HR |
2318 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2319 | source = bs; | |
2320 | } | |
d9b902db | 2321 | |
ac3c5d83 SH |
2322 | size = bdrv_getlength(bs); |
2323 | if (size < 0) { | |
2324 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2325 | return; | |
2326 | } | |
2327 | ||
09158f00 BC |
2328 | if (has_replaces) { |
2329 | BlockDriverState *to_replace_bs; | |
2330 | ||
2331 | if (!has_node_name) { | |
2332 | error_setg(errp, "a node-name must be provided when replacing a" | |
2333 | " named node of the graph"); | |
2334 | return; | |
2335 | } | |
2336 | ||
2337 | to_replace_bs = check_to_replace_node(replaces, &local_err); | |
2338 | ||
2339 | if (!to_replace_bs) { | |
2340 | error_propagate(errp, local_err); | |
2341 | return; | |
2342 | } | |
2343 | ||
2344 | if (size != bdrv_getlength(to_replace_bs)) { | |
2345 | error_setg(errp, "cannot replace image with a mirror image of " | |
2346 | "different size"); | |
2347 | return; | |
2348 | } | |
2349 | } | |
2350 | ||
14526864 HR |
2351 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2352 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2353 | { | |
d9b902db PB |
2354 | /* create new image w/o backing file */ |
2355 | assert(format && drv); | |
cf8f2426 | 2356 | bdrv_img_create(target, format, |
f382d43a | 2357 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2358 | } else { |
2359 | switch (mode) { | |
2360 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2361 | break; |
2362 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2363 | /* create new image with backing file */ | |
cf8f2426 LC |
2364 | bdrv_img_create(target, format, |
2365 | source->filename, | |
2366 | source->drv->format_name, | |
f382d43a | 2367 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2368 | break; |
2369 | default: | |
2370 | abort(); | |
2371 | } | |
2372 | } | |
2373 | ||
84d18f06 | 2374 | if (local_err) { |
cf8f2426 | 2375 | error_propagate(errp, local_err); |
d9b902db PB |
2376 | return; |
2377 | } | |
2378 | ||
4c828dc6 BC |
2379 | if (has_node_name) { |
2380 | options = qdict_new(); | |
2381 | qdict_put(options, "node-name", qstring_from_str(node_name)); | |
2382 | } | |
2383 | ||
b812f671 PB |
2384 | /* Mirroring takes care of copy-on-write using the source's backing |
2385 | * file. | |
2386 | */ | |
f67503e5 | 2387 | target_bs = NULL; |
4c828dc6 BC |
2388 | ret = bdrv_open(&target_bs, target, NULL, options, |
2389 | flags | BDRV_O_NO_BACKING, drv, &local_err); | |
d9b902db | 2390 | if (ret < 0) { |
34b5d2c6 | 2391 | error_propagate(errp, local_err); |
d9b902db PB |
2392 | return; |
2393 | } | |
2394 | ||
09158f00 BC |
2395 | /* pass the node name to replace to mirror start since it's loose coupling |
2396 | * and will allow to check whether the node still exist at mirror completion | |
2397 | */ | |
2398 | mirror_start(bs, target_bs, | |
2399 | has_replaces ? replaces : NULL, | |
2400 | speed, granularity, buf_size, sync, | |
eee13dfe | 2401 | on_source_error, on_target_error, |
b952b558 | 2402 | block_job_cb, bs, &local_err); |
d9b902db | 2403 | if (local_err != NULL) { |
4f6fd349 | 2404 | bdrv_unref(target_bs); |
d9b902db PB |
2405 | error_propagate(errp, local_err); |
2406 | return; | |
2407 | } | |
d9b902db PB |
2408 | } |
2409 | ||
2d47c6e9 SH |
2410 | static BlockJob *find_block_job(const char *device) |
2411 | { | |
2412 | BlockDriverState *bs; | |
2413 | ||
2414 | bs = bdrv_find(device); | |
2415 | if (!bs || !bs->job) { | |
2416 | return NULL; | |
2417 | } | |
2418 | return bs->job; | |
2419 | } | |
2420 | ||
882ec7ce | 2421 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
2422 | { |
2423 | BlockJob *job = find_block_job(device); | |
2424 | ||
2425 | if (!job) { | |
7ef15070 | 2426 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
2427 | return; |
2428 | } | |
2429 | ||
882ec7ce | 2430 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 2431 | } |
370521a1 | 2432 | |
6e37fb81 PB |
2433 | void qmp_block_job_cancel(const char *device, |
2434 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
2435 | { |
2436 | BlockJob *job = find_block_job(device); | |
2437 | ||
6e37fb81 PB |
2438 | if (!has_force) { |
2439 | force = false; | |
2440 | } | |
2441 | ||
370521a1 | 2442 | if (!job) { |
7ef15070 | 2443 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
2444 | return; |
2445 | } | |
6e37fb81 | 2446 | if (job->paused && !force) { |
f231b88d CR |
2447 | error_setg(errp, "The block job for device '%s' is currently paused", |
2448 | device); | |
8acc72a4 PB |
2449 | return; |
2450 | } | |
370521a1 SH |
2451 | |
2452 | trace_qmp_block_job_cancel(job); | |
2453 | block_job_cancel(job); | |
2454 | } | |
fb5458cd | 2455 | |
6e37fb81 PB |
2456 | void qmp_block_job_pause(const char *device, Error **errp) |
2457 | { | |
2458 | BlockJob *job = find_block_job(device); | |
2459 | ||
2460 | if (!job) { | |
2461 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2462 | return; | |
2463 | } | |
2464 | ||
2465 | trace_qmp_block_job_pause(job); | |
2466 | block_job_pause(job); | |
2467 | } | |
2468 | ||
2469 | void qmp_block_job_resume(const char *device, Error **errp) | |
2470 | { | |
2471 | BlockJob *job = find_block_job(device); | |
2472 | ||
2473 | if (!job) { | |
2474 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2475 | return; | |
2476 | } | |
2477 | ||
2478 | trace_qmp_block_job_resume(job); | |
2479 | block_job_resume(job); | |
2480 | } | |
2481 | ||
aeae883b PB |
2482 | void qmp_block_job_complete(const char *device, Error **errp) |
2483 | { | |
2484 | BlockJob *job = find_block_job(device); | |
2485 | ||
2486 | if (!job) { | |
2487 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
2488 | return; | |
2489 | } | |
2490 | ||
2491 | trace_qmp_block_job_complete(job); | |
2492 | block_job_complete(job, errp); | |
2493 | } | |
2494 | ||
fa40e656 JC |
2495 | void qmp_change_backing_file(const char *device, |
2496 | const char *image_node_name, | |
2497 | const char *backing_file, | |
2498 | Error **errp) | |
2499 | { | |
2500 | BlockDriverState *bs = NULL; | |
2501 | BlockDriverState *image_bs = NULL; | |
2502 | Error *local_err = NULL; | |
2503 | bool ro; | |
2504 | int open_flags; | |
2505 | int ret; | |
2506 | ||
2507 | /* find the top layer BDS of the chain */ | |
2508 | bs = bdrv_find(device); | |
2509 | if (!bs) { | |
2510 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2511 | return; | |
2512 | } | |
2513 | ||
2514 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); | |
2515 | if (local_err) { | |
2516 | error_propagate(errp, local_err); | |
2517 | return; | |
2518 | } | |
2519 | ||
2520 | if (!image_bs) { | |
2521 | error_setg(errp, "image file not found"); | |
2522 | return; | |
2523 | } | |
2524 | ||
2525 | if (bdrv_find_base(image_bs) == image_bs) { | |
2526 | error_setg(errp, "not allowing backing file change on an image " | |
2527 | "without a backing file"); | |
2528 | return; | |
2529 | } | |
2530 | ||
2531 | /* even though we are not necessarily operating on bs, we need it to | |
2532 | * determine if block ops are currently prohibited on the chain */ | |
2533 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
2534 | return; | |
2535 | } | |
2536 | ||
2537 | /* final sanity check */ | |
2538 | if (!bdrv_chain_contains(bs, image_bs)) { | |
2539 | error_setg(errp, "'%s' and image file are not in the same chain", | |
2540 | device); | |
2541 | return; | |
2542 | } | |
2543 | ||
2544 | /* if not r/w, reopen to make r/w */ | |
2545 | open_flags = image_bs->open_flags; | |
2546 | ro = bdrv_is_read_only(image_bs); | |
2547 | ||
2548 | if (ro) { | |
2549 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
2550 | if (local_err) { | |
2551 | error_propagate(errp, local_err); | |
2552 | return; | |
2553 | } | |
2554 | } | |
2555 | ||
2556 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
2557 | image_bs->drv ? image_bs->drv->format_name : ""); | |
2558 | ||
2559 | if (ret < 0) { | |
2560 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
2561 | backing_file); | |
2562 | /* don't exit here, so we can try to restore open flags if | |
2563 | * appropriate */ | |
2564 | } | |
2565 | ||
2566 | if (ro) { | |
2567 | bdrv_reopen(image_bs, open_flags, &local_err); | |
2568 | if (local_err) { | |
2569 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
2570 | } | |
2571 | } | |
2572 | } | |
2573 | ||
d26c9a15 KW |
2574 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2575 | { | |
2576 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
8ae8e904 | 2577 | DriveInfo *dinfo; |
d26c9a15 KW |
2578 | QObject *obj; |
2579 | QDict *qdict; | |
d26c9a15 KW |
2580 | Error *local_err = NULL; |
2581 | ||
2582 | /* Require an ID in the top level */ | |
2583 | if (!options->has_id) { | |
2584 | error_setg(errp, "Block device needs an ID"); | |
2585 | goto fail; | |
2586 | } | |
2587 | ||
60e19e06 | 2588 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 2589 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 2590 | * when called from drive_new(). |
d26c9a15 KW |
2591 | * |
2592 | * For now, simply forbidding the combination for all drivers will do. */ | |
2593 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
2594 | bool direct = options->has_cache && |
2595 | options->cache->has_direct && | |
2596 | options->cache->direct; | |
2597 | if (!direct) { | |
d26c9a15 KW |
2598 | error_setg(errp, "aio=native requires cache.direct=true"); |
2599 | goto fail; | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2604 | &options, NULL, &local_err); | |
84d18f06 | 2605 | if (local_err) { |
d26c9a15 KW |
2606 | error_propagate(errp, local_err); |
2607 | goto fail; | |
2608 | } | |
2609 | ||
2610 | obj = qmp_output_get_qobject(ov); | |
2611 | qdict = qobject_to_qdict(obj); | |
2612 | ||
2613 | qdict_flatten(qdict); | |
2614 | ||
8ae8e904 | 2615 | dinfo = blockdev_init(NULL, qdict, &local_err); |
84d18f06 | 2616 | if (local_err) { |
b681072d | 2617 | error_propagate(errp, local_err); |
d26c9a15 KW |
2618 | goto fail; |
2619 | } | |
2620 | ||
8ae8e904 | 2621 | if (bdrv_key_required(dinfo->bdrv)) { |
60e19e06 | 2622 | drive_del(dinfo); |
8ae8e904 KW |
2623 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
2624 | goto fail; | |
2625 | } | |
2626 | ||
d26c9a15 KW |
2627 | fail: |
2628 | qmp_output_visitor_cleanup(ov); | |
2629 | } | |
2630 | ||
fb5458cd SH |
2631 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
2632 | { | |
2633 | BlockJobInfoList **prev = opaque; | |
2634 | BlockJob *job = bs->job; | |
2635 | ||
2636 | if (job) { | |
30e628b7 PB |
2637 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
2638 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
2639 | (*prev)->next = elem; |
2640 | *prev = elem; | |
2641 | } | |
2642 | } | |
2643 | ||
2644 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
2645 | { | |
2646 | /* Dummy is a fake list element for holding the head pointer */ | |
2647 | BlockJobInfoList dummy = {}; | |
2648 | BlockJobInfoList *prev = &dummy; | |
2649 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
2650 | return dummy.next; | |
2651 | } | |
4d454574 | 2652 | |
0006383e | 2653 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2654 | .name = "drive", |
0006383e | 2655 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2656 | .desc = { |
2657 | { | |
4d454574 PB |
2658 | .name = "snapshot", |
2659 | .type = QEMU_OPT_BOOL, | |
2660 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
2661 | },{ |
2662 | .name = "discard", | |
2663 | .type = QEMU_OPT_STRING, | |
2664 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2665 | },{ |
29c4e2b5 KW |
2666 | .name = "cache.writeback", |
2667 | .type = QEMU_OPT_BOOL, | |
2668 | .help = "enables writeback mode for any caches", | |
2669 | },{ | |
2670 | .name = "cache.direct", | |
2671 | .type = QEMU_OPT_BOOL, | |
2672 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2673 | },{ | |
2674 | .name = "cache.no-flush", | |
2675 | .type = QEMU_OPT_BOOL, | |
2676 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2677 | },{ |
2678 | .name = "aio", | |
2679 | .type = QEMU_OPT_STRING, | |
2680 | .help = "host AIO implementation (threads, native)", | |
2681 | },{ | |
2682 | .name = "format", | |
2683 | .type = QEMU_OPT_STRING, | |
2684 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
2685 | },{ |
2686 | .name = "rerror", | |
2687 | .type = QEMU_OPT_STRING, | |
2688 | .help = "read error action", | |
2689 | },{ | |
2690 | .name = "werror", | |
2691 | .type = QEMU_OPT_STRING, | |
2692 | .help = "write error action", | |
4d454574 | 2693 | },{ |
0f227a94 | 2694 | .name = "read-only", |
4d454574 PB |
2695 | .type = QEMU_OPT_BOOL, |
2696 | .help = "open drive file as read-only", | |
2697 | },{ | |
57975222 | 2698 | .name = "throttling.iops-total", |
4d454574 PB |
2699 | .type = QEMU_OPT_NUMBER, |
2700 | .help = "limit total I/O operations per second", | |
2701 | },{ | |
57975222 | 2702 | .name = "throttling.iops-read", |
4d454574 PB |
2703 | .type = QEMU_OPT_NUMBER, |
2704 | .help = "limit read operations per second", | |
2705 | },{ | |
57975222 | 2706 | .name = "throttling.iops-write", |
4d454574 PB |
2707 | .type = QEMU_OPT_NUMBER, |
2708 | .help = "limit write operations per second", | |
2709 | },{ | |
57975222 | 2710 | .name = "throttling.bps-total", |
4d454574 PB |
2711 | .type = QEMU_OPT_NUMBER, |
2712 | .help = "limit total bytes per second", | |
2713 | },{ | |
57975222 | 2714 | .name = "throttling.bps-read", |
4d454574 PB |
2715 | .type = QEMU_OPT_NUMBER, |
2716 | .help = "limit read bytes per second", | |
2717 | },{ | |
57975222 | 2718 | .name = "throttling.bps-write", |
4d454574 PB |
2719 | .type = QEMU_OPT_NUMBER, |
2720 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2721 | },{ |
2722 | .name = "throttling.iops-total-max", | |
2723 | .type = QEMU_OPT_NUMBER, | |
2724 | .help = "I/O operations burst", | |
2725 | },{ | |
2726 | .name = "throttling.iops-read-max", | |
2727 | .type = QEMU_OPT_NUMBER, | |
2728 | .help = "I/O operations read burst", | |
2729 | },{ | |
2730 | .name = "throttling.iops-write-max", | |
2731 | .type = QEMU_OPT_NUMBER, | |
2732 | .help = "I/O operations write burst", | |
2733 | },{ | |
2734 | .name = "throttling.bps-total-max", | |
2735 | .type = QEMU_OPT_NUMBER, | |
2736 | .help = "total bytes burst", | |
2737 | },{ | |
2738 | .name = "throttling.bps-read-max", | |
2739 | .type = QEMU_OPT_NUMBER, | |
2740 | .help = "total bytes read burst", | |
2741 | },{ | |
2742 | .name = "throttling.bps-write-max", | |
2743 | .type = QEMU_OPT_NUMBER, | |
2744 | .help = "total bytes write burst", | |
2024c1df BC |
2745 | },{ |
2746 | .name = "throttling.iops-size", | |
2747 | .type = QEMU_OPT_NUMBER, | |
2748 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2749 | },{ |
2750 | .name = "copy-on-read", | |
2751 | .type = QEMU_OPT_BOOL, | |
2752 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
2753 | },{ |
2754 | .name = "detect-zeroes", | |
2755 | .type = QEMU_OPT_STRING, | |
2756 | .help = "try to optimize zero writes (off, on, unmap)", | |
4d454574 PB |
2757 | }, |
2758 | { /* end of list */ } | |
2759 | }, | |
2760 | }; | |
0006383e KW |
2761 | |
2762 | QemuOptsList qemu_drive_opts = { | |
2763 | .name = "drive", | |
2764 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2765 | .desc = { | |
492fdc6f KW |
2766 | /* |
2767 | * no elements => accept any params | |
2768 | * validation will happen later | |
2769 | */ | |
0006383e KW |
2770 | { /* end of list */ } |
2771 | }, | |
2772 | }; |